Method for the disposal of a material

ABSTRACT

A mixture of a methylene chloride solution as a halogen-containing solvent with water is put in a treatment tank to generate vapors. The generated methylene chloride vapor, water vapor, and occasionally surfactant vapor penetrate into a waste synthetic resin film (W). When the interior of the treatment tank (T) is evacuated, chloride ions (Cl-)and methylene free radicals (--CH 2  --) generated from the vapors exhibit an oxidative effect for a longer time more strongly than usual. This breaks a long-chain hydrocarbon molecule constituting the synthetic resin or the like to carbohydrates, alcohols, and water, so that the waste is dissolved or decomposed. Further, harmful components of PCB and fat or oil components of animals, fish and the like are decomposed.

FIELD OF THE INVENTION

The present invention relates to:

a method and equipment for forcedly oxidizing material under fumigatingconditions, wherein the material is exposed to the vapor of a specialmixture;

a method and equipment for the disposal of a waste synthetic resin film,such as polyvinyl chloride , which is extensively used for housingculture, malting culture and the like by farmers, using a mixturesolution of methylene chloride and water as a strong oxidative mixtureliquid in a treatment equipment;

a method and equipment for removal of harmful chlorine from a polyvinylchloride film, as the type of waste synthetic resin film mentionedabove;

a method and equipment for dissolving and decomposing enormous amountsof synthetic resin from collected trash bags including domestic garbageor waste films of synthetic resin prior to incineration thereof;

a method and equipment for opening the blocked cell walls of garbage orvegetation and dissolving water and fat thereof, thereby easingextraction of vegetable essence thereof, or easing a process forreducing the amount of water in the garbage;

a method and equipment for decomposing polychlorinated biphenyl (PCB),and

a method and equipment for removal of fat from animal bones or fishbody, which is used in a process of producing phosphatic manure ofpowdered bones comprising a step of removal of fat from bones of cattleor pigs, or a process of producing feed of powdered bones comprising astep of removing fat from bodies of sardine or horse mackerel.

DESCRIPTION OF RELATED ART

Conventionally, a general method of oxidizing material entails heatingat a high temperature or soaking in an alkaline or acid solution.

However, it is impossible to use a conventional method for oxidizingmaterial which is spoiled by heating at high temperature or by soakingin solution.

The present invention relates to a method of penetrating vapor or gasinto such material, which cannot be heated at high temperature or soakedin a solution, in a processing tank having a low temperature about50-150° C.

Also, waste synthetic resin film is usually dumped as general garbageand incinerated in a garbage furnace.

However, the synthetic resin film makes up large quantities of thegarbage, and is of industrial waste, which is different from generaltrash or garbage in quality. A large amount of heat is generated whenthe synthetic resin film is incinerated. Chlorine gas is generated whenpolyvinyl chloride is burned up. The disposal of synthetic resin filmcosts too much as a public enterprise because of its acceleration ofdamage to a trash burner and its smoke pollution.

Therefore, some public bodies require a person who dumps a wastesynthetic resin film to pay the expense of disposal thereof.

"PCB" is a general term for polychlorinated biphenyl, which is a mixtureof chlorinated biphenyl having two, three, four, five or six chlorines.The PCB is easy to deal with because it is chemically, physically stableand it is liquid at normal temperatures. Although PCB is not usedcurrently because it is harmful, it has ben primarily used as aninsulator of a condenser or a transformer or as an ingredient of apressure sensing paper or so on.

However, there still remains the problem about disposal of goodscontaining PCB. Detection of PCB from the ground, drainage or sludgeconstitutes a public problem.

It is extremely hard to resolve and make PCB harmless because PCB isstable.

Under these circumstances, the study for resolving and making PCBharmless is carried on. For example, exposing PCB to ultraviolet raysand culturing microorganisms in the ground containing PCB are known asmethods of resolving PCB.

Such technology is disclosed in Japanese Patent Provisional PublicationNo. 4-370097, for example.

Also, as another method of resolution and disposal of PCB is known atechnique to make PCB harmless by putting insulating oil containing PCBinto a heating furnace, heating PCB at a temperature less than 110° C.so as to evaporate and separate PCB, and burning the PCB gas and thecombustion gas of PCB so as to resolve in another furnace which is at ahigh temperature of from 1200 to 1500° C.

The technique is shown in the Japanese Patent Provisional PublicationNo. 2-232073.

Also, conventionally, a method of processing a pig bone or cow bone toremove meat for removal of fat is boiling the bones well. The bones areground into powder after the process and are used as powdered bone. Itis preferred to burn up the bone without processing for removal fatrather than to boil them, because boiling for removal of fat takes muchtime and boiling a large amount of bones at a time is impossible.

Furthermore, as for fish, a method of removing only fats has not beendiscovered. Whereby, fish is dried in a drying kiln without a processfor removing fats, so that fish meal is made with fats on.

Therefore, in the case of making fish meal, it is hard to process fishbecause of its strong viscosity. It is not possible to lower thepercentage of moisture content because of the fats, so that there is aproblem that it is perishable. Also, fish meal is made without removingfish fat and is fed to a cow or a pig so that there is a problem thattheir meats smell of fish.

The present invention relates to a technique for producing high-gradefish meal which scarcely smells of fish.

SUMMARY OF THE INVENTION

The present invention relates to a technique of oxidizing material at alow temperature of 50 to 100° C. by penetrating gas generated from amixture of methylene chloride solution and water and filling the gas ina treatment tank instead of soaking in solution.

The present invention provides a method and an equipment for melting,compressing and hardening a waste synthetic resin film into a solidstate, which does not pollute the environment, at the lowest possiblecost, when those who damp trash as a waste synthetic resin film arerequired to burn it up or bury it and to bear the cost.

The present invention dissolves and compresses a waste synthetic resinfilm before incineration by using the strong oxidation of chlorine ion(Cl⁼) or methylene free radical (--CH2--) generated from the mixturevapor of methylene chloride vapor and water vapor, so as to transform itinto a solid state or liquid state, which is used for fuel.

The present invention dissolves and compresses a waste synthetic resinfilm, which is mostly used for a vinyl plastic hothouse cultivation or amalting film cultivation, so as to transform it into a small solid.Also, when the synthetic resin of the waste film is chloric syntheticresin, such as polyvinyl chlorine, the present invention decomposesharmful chlorine therefrom, so that chlorine gas is not generated whenthe disposed waste film is incinerated.

A waste synthetic resin film shortens the expected life span of afurnace because it generates a high heat or a poisonous gas in a furnacewhen it is incinerated. Also, the perfect incineration takes much time,thereby the modulus of an equipment for incineration goes down.

The present invention eliminates faults of prior arts such as thosementioned above.

The present invention relates to a method of disposal of wasteeffectively at a low cost by penetrating vapor generated from themixture solution of methylene chloride solution, water and occasionallysurfactant solution at a low temperature into a waste synthetic resinfilm so as to resolve, decompose and compress synthetic resin.

Large domestic garbage contains synthetic resin matter such as a trashbag, a pack for wrapping a daily dish, a dish for displaying, apolyethylene terephthalate bottle or so on. It is easy to separate metalmaterial from garbage by a magnet or so on. However, it is difficult toseparate synthetic resin from garbage.

The present invention relates to a method and an equipment fordissolving and extracting synthetic resin from garbage by using strongoxidation of a chlorine ion generated from the mixture vapor ofmethylene chloride vapor and water vapor, so as to refine the extractedsynthetic resin into fuel for incineration in a furnace.

Also, the present invention easily dissolves and extracts water and fator oil components in garbage or vegetation by penetrating vapor of themixture solution of methylene chloride solution, water and occasionallysurfactant solution into garbage or vegetation and opening the cellwalls of vegetation.

A conventional method of disposal of PCB costs a lot and cannot make allPCB completely harmless. Also, a technique for disposal of PCB is notdeveloped because the disposal thereof does not make a profit by itself.

The present invention provides a method of decomposing PCB, wherein allPCB are oxidized in a treatment tank of a low temperature at a time bystrong oxidation of chlorine ion (Cl-) instead of a partial disposalsuch as exposing to ultraviolet. This method reduces a loss of chlorinehydrocarbon solution and enables chlorine hydrocarbon solution to bereduced, so that PCB can be decomposed at a low cost in publicfacilities.

Conventionally, a method of extracting fat from fish or bones of animalshas not been discovered. The present invention relates to a method ofmaking a "supper critical fluid" state, which is strongly oxidizable byexposing methylene chloride solution and water to vapor generated fromthe mixture of methylene chloride solution, water and occasionallysurfactant solution at a low temperature and under a high pressure, soas to easily extract fat components from animal bones or fish.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing the fundamental construction of a method andequipment for the disposal of waste synthetic resin film according tothe present invention;

FIG. 2 is a chart showing processes and steps in the method of disposalof waste synthetic resin film by means of indication as ON and OFF of avalve mechanism;

FIG. 3 is a side view of a treatment tank T, a lid 22, and a mountingtable 26;

FIG. 4 is a side view showing a state in which waste synthetic resinfilm W is mounted on the table 26 and is enclosed into the treatmenttank T;

FIG. 5 is a sectional front view of the same of FIG. 4;

FIG. 6 is a side view showing a state in which waste synthetic resinfilm W is taken out from the treatment tank T after process;

FIG. 7 is a sectional front view of the same of FIG. 6;

FIG. 8 is a graph showing reduction of chlorine when polyvinyl chlorideis processed by a method and an equipment for the disposal of materialsuch as waste according to the present invention;

FIG. 9 is a sectional front view showing a state in which waste Wcontaining synthetic resin matter m is mounting on the table 26 andprocessed;

FIG. 10 is a sectional front view showing a state in which PCB solutionin a vessel is mounted on the table 26 and processed;

FIG. 11 is a sectional front view showing fish, bones of animals or soon are mounted on the table 26 and processed.

DETAILED DESCRIPTION OF THE INVENTION

In the present invention, methylene chloride solvent solution Me is usedas a halogenated solvent solution and a type of chloric solution.

However, halogenated solvent solution or chloride solution is notlimited only to methylene chloride solvent solution Me. It can betrichloroethylene, 111-trichloroethylene, tetrachloroethylene, and soon. Methylene chloride solvent solution Me is one embodiment of ahalogenated solvent solution or chloride solution.

Methylene chloride is a substance expressed by a chemical formula as CH₂Cl₂ and has a molecular weight of 84.93. This substance is sometimescalled dichloromethane or dichloromethylene in addition to the generalname as methylene chloride. Its boiling point and melting point are40.4° C. and -96.8° C., respectively.

Surfactants added into the mixture of methylene chloride solventsolution Me and water Wa are classified as anionic, cationic, noninonic,or amphoteric. Anionic surfactants include alkyl sodium sulfate, amidesodium sulfate, secondary alkyl sodium sulfate, alkyl sodium sulfonate,amide sodium sulfonate, alkyl naphthalene sodium sulfate and the like.

Cationic surfactants include amine acetate salt, alkyl trimethylammonium chloride, dialkyl methyl ammonium chloride, alkyl pyridiumhalogenide, alkyl dimethyl benzyl ammonium chloride and the like.

Amphoteric surfactants include carboxylic acid type, sulfonic acid typeand sulfate type surfactants.

Nonionic surfactants include polyoxyethylene alkylphenol,polyoxyethylene fatty alcohol, polyoxyethylene fatty acid,polyoxyethylenic acid amide, polyoxyethylenic fatty amine, andpolypropylene glycol.

In the present invention, when there is an increase in alkalinity, Cl₂is liable to be generated. To prevent the formation of Cl₂,polyoxyethylene alkylphenol in an alcoholic system, which is a nonionicsurfactant relatively stable against acid and alkali, is effective.Also, anionic or cationic surfactants are effective.

FIG. 1 is a diagram showing the fundamental composition of a method andan equipment for the disposal of material such as waste. FIG. 2 is aview showing each of the steps in the method of disposal of materialssuch as waste by means of indicating the ON and OFF position of a valvemechanism. FIG. 3 is a side view of a treatment tank T and lid 22. FIG.4 is a side view of the same showing a state in which waste syntheticresin film W is mounted on a table 26 and enclosed in the tank T. FIG. 5is a sectional front view of FIG. 4. FIG. 6 is a side view showing astate in which waste synthetic resin film W is taken out from the tank Tafter processing. FIG. 7 is a sectional front view of FIG. 6.

Referring to FIGS. 3, 4, 5, 6 and 7, the structure including a treatmenttank T, a lid 22, and a table 26 will be described. The treatment tank Tis constructed as a pressure vessel adapted to endure such degrees ofpressure as 50 Torr for deaeration and a vacuum of 200 Torr for recoveryof methylene chloride required in the method of and equipment for thedisposal of waste matter according to the present invention.

The lid 22 is disposed in the front side of the vessel and isstructurally integral with the table 26. The table 26 is displaced on arail 24 provided in the treatment tank T and the lid 22 is movable onthe rail 24 below a lid supporting part 23 so as to move integrally withthe lid supporting part 23.

A waste synthetic resin film W as an object to be processed, which issoiled with earth and has been shredded, is mounted on the table 26which is withdrawn and advanced integrally with the lid 22. Chlorine ion(Cl⁼) or methylene free radical (--CH2--) can easily permeate the entirewaste synthetic resin film W, which has been shredded.

In the state that the table 26 has been thrusted into and retained inthe inner space of the treatment tank T, pressure is applied to saidinner part after the lid 22 closes the treatment tank T hermetically andunmovably.

Heating/cooling pipes 20 are arranged on the inner bottom of thetreatment tank T and, when heating is intended, steam having atemperature amounting to 100 and several tens ° C. is supplied from aboiler B (as represented in FIG. 1). For cooling, water in a coolingwater tank 18 is supplied. A mixture solution of methylene chloride andwater may be poured into the treatment tank T as it is or after it ischanged into mixed gas in a preparatory tank. In the embodiment shown inFIG. 1, the mixture fed into the treatment tank T is a liquid.

The mixture solution, while kept as it is, is poured into the treatmenttank T to such a level as will immerse the heating/cooling pipes 20.Then steam having a temperature amounting to 100 and several tens ° C.is fed from the boiler B into the heating/cooling pipes 20. Both themethylene chloride, having a boiling point of 40° C., and water turninto vapor. Stream and vapor of methylene chloride are fed at the sametime to promote the permeation of vapor the of methylene chloride intothe inside of the waste synthetic resin film W.

In the present invention, as shown in FIGS. 5 and 7, the mixturesolution of methylene chloride, water and surfactant reaches a level nohigher than that below the table 26, so that the waste synthetic resinfilm W is not immersed in the mixture solution even at the highestlevel.

The method of the present invention entirely depends on fumigation inwhich the waste synthetic resin film W is processed with the vapor ofthe mixture solution which it absorbs.

FIGS. 6 and 7 show a state of removing the waste synthetic resin film Wafter processing. The waste synthetic resin film W mounted on the table26 is melted and compressed into a solid state on the surface of thetable 26. The processed waste synthetic resin film W may be torn off andburned up as fuel in a burner or a furnace as it is or it may bedecomposed by pyrolysis and distillation and changed into oil for fuel.

Referring to FIG. 1, the fundamental composition of the method andequipment of the present invention will be described.

As an equipment, the main components thereof are the treatment tank Tand a mixture solution tank 14, wherein a mixture solution of methylenechloride, water and surfactant is thrown into the mixture solution tank14. The boiler B, as previously described, heats the mixture solutionand a compressor C operates to apply pressure when returning mixturesolution from the treatment tank T to the mixture solution tank 14 aftercompletion of processing.

A vacuum pump P operates for absorbing methylene chloride vaporremaining in the inner space of the treatment tank T and the inside ofthe waste synthetic resin film W after the mixture solution is forcedlydischarged by the compressor C. The absorbed methylene chloride vapor,which can not be discharged into the atmosphere, is cooled and liquefiedin a condenser 16 and is returned to the mixture solution tank 14through a condenser pipe 21. A chiller 15 cools cooling water in saidcondenser 16. A filter 19 is provided for filtering off impurities suchas dust in the mixture solution forced out from the treatment tank T bythe compressor C. A cooling water tank 17 is a receptacle for coolingwater used for liquefaction of the mixture solution vapor.

Solenoid valves are arranged at various portions. Such solenoid valvesare constructed to be opened and closed by an automatic control deviceat fixed intervals and automatically operated, as shown in FIG. 2. Theyare operated in steplike order such as "deaeration", "feed of mixturesolution", "exposing to mixture solution vapor", "cooling of mixturesolution", "return of mixture solution to tank", "recovery of mixturesolution vapor", and "recovery of mixture solution in condenser". At thesame time, the compressor C, boiler B, vacuum pump P, and a chiller 15are automatically driven and stopped. Collectively. in this embodiment,a mixture ratio by weight between methylene chloride solution and wateris set at 4:1. A temperature in the treatment tank T is about 80° C. Onecycle of this process is designed to be completed within 24 hours.

FIG. 2 shows a state of the solenoid valve in every step in the methodand equipment for the disposal of waste synthetic resin film. In thestep of "deaeration", the vacuum pump P is driven. A solenoid valve 1 inthe circuit to connect the vacuum pump P to the condenser 16 and anothervalve 3 adapting the condenser 16 to communicate with the treatment tankT is opened. The other solenoid valves are all closed. In this way, theinner space of the treatment tank T is caused to become a vacuum to adegree of about 50 Torr, whereby air in the waste synthetic resin film Wis drawn out.

Then, in the step of "feed of mixture solution", a solenoid valve 4 foradapting the treatment tank T to communicate with the mixture solutiontank 14 is opened, whereas the other valves are closed. Thus, themixture solution moves to the inner part of the treatment tank T so thatthe level of solution in the mixture solution tank may be flush withthat in the treatment tank T, since both tanks are arranged atapproximately the same levels.

In the step of "exposing to mixture solution vapor", the solenoid valve7 between the boiler B and the treatment tank T and another solenoidvalve 9 adapting the treatment tank T to communicate with a drain areopened, whereas the other valves are closed. Then, steam of hightemperature coming from the boiler B is fed into the heating/coolingpipes 20 and the mixture solution in the treatment tank T changes intomethylene chloride vapor, water vapor and, optionally, surfactant vaporso as to permeate the waste synthetic resin film W. The step of"exposing to mixture solution vapor" continues for about 8-24 hours. Theduration of this process changes with the temperature used for theprocess, the type of synthetic resin and the like.

The step of "recovery of mixture solution" will be described. In thiscase, a solenoid valve 8 adapting the cooling water tank 18 tocommunicate with the treatment tank T and another valve 10 adapting theprocessing tank T to communicate with the cooling tank 17 are opened,whereas the other valves are closed. Thus, cooling water passes throughthe inner part of the heating/cooling pipes 20 and a temperature in theinner part of the treatment tank T falls below 40° C., which is theboiling point of methylene chloride, whereby both methylene chloridevapor and water vapor are returned to a liquid state.

The step of "cooling mixture solution" will be described. In this case,a solenoid valve 2 is opened for escape of air in the treatment tank Tand another solenoid valve 5 under the treatment tank T as well asanother solenoid valve 6 adapting the compressor C to communicate withthe treatment tank T are opened so as to drive the compressor C. On theother hand, a solenoid valve 12 between the filter 19 and the mixturesolution tank 14 and another valve 13 connecting the mixture solutiontank 14 to the atmosphere are opened. Then, some degree of pressure actson the inner part of the treatment tank T and a liquefied mixture vaporis forcedly returned to the mixture solution tank 14.

The step of "return of mixture solution to tank" will be described. Inthis case, the vacuum pump P is driven. A solenoid valve 1 adapting thevacuum pump P to communicate with the condenser 16 and another valve 3adapting the condenser 16 to communicate with the treatment tank T areopened. The other valves are closed. In this state, methylene chloridevapor present in the treatment tank T and having permeated into thewaste synthetic resin film W is recovered by the vacuum pump P. In thiscase, the degree of pressure of the interior of the treatment tank T islowered to about 200 Torr.

In the step of "recovery of mixture solution vapor", a solenoid valve 2communicating with the atmosphere and another solenoid valve 11 adaptingthe condenser pipe 21 to communicate with the mixture solution tank 14are opened. Hence, recovery of mixture solution such as methylenechloride remaining in the condenser pipe 21 of the condenser 16 can berecovered into the mixture solution tank 14. A series of such steps asabove is completed after a lapse of 24 hours.

Referring to FIGS. 5 and 7, a description will be made on the section ofthe inner part of the treatment tank T in operation of processing. Theheating/cooling pipes 20 are disposed on the inner lower part of thetreatment tank T and the table 26 is disposed above said heating/coolingpipes 20. The waste synthetic resin film W is mounted on the table 26.

The mixture of water Wa, surfactant solution S, and methylene chloridesolution Me is poured into the treatment tank T, so that the level ofthe mixture solution comes to be higher than the top of theheating/cooling pipes 20, but not high enough to immerse the wastesynthetic resin film W on the table 26 into the solution.

Water Wa and surfactant solution S having a specific weight of 1.00 and1.04, respectively, are at approximately the same levels and the latterS dissolves into the former W to be in one body, thereby composing alayer of "water Wa+surfactant solution S" as shown in FIGS. 5 and 7. Incontrast with this, methylene chloride solution Me, having the specificweight of 1.33 and being incapable of dissolving into water Wa, forms alayer beneath the layer of "water Wa +surfactant solution S".

When steam heated to 160° C. is fed into the heating/cooling pipes 20disposed in the "water Wa+surfactant S" layer, the temperature of theportion around the heating/cooling pipes 20 rises. The heating/coolingpipes 20 are arranged in the layer of "water Wa+surfactant solution S",so that the temperature of the portion of the layer near theheating/cooling pipes 20 rises earlier than that of the other portions.

When the temperature of the heating/cooling pipes 20 gradually rises andreaches about 40° C., methylene chloride solution Me is heated to reachthe boiling point thereof. It turns into a mixture of methylene chloridevapor and bubbles, which passes through the layer of "waterWa+surfactant solution S", and reaches the waste synthetic resin film Wso as to permeate the film W.

In the processing of a usual waste synthetic resin film W, theprocessing operation continues in a state that the mixture solution isheated to about 50° C. and methylene chloride vapor passes through themixture solution of water and surfactant solution S and reaches thewaste synthetic resin film W.

In the case where a waste synthetic resin film W is difficult toprocess, the mixture solution is heated to about 100° C., so that waterWa and surfactant solution S are turned into vapor in addition tomethylene chloride.

The waste synthetic resin film W is oxidized and melted by a chlorineion (Cl-) and a methylene free radical (--CH₂ --) generated frommethylene chloride vapor and water vapor of the present invention.

A temperature for heating a mixture solution ranges from 50 to 150° C.,so that chlorine ion (Cl-) and methylene free radical (--CH₂ --) can begenerated at a low temperature and the processing temperature isdecreased. The waste synthetic resin film W can be processed withoutcalcination at a high temperature.

A mixture ratio by weight between methylene chloride solution and wateris set at about 1:1 to 4:1 to generate the best state of chlorine ion(Cl-) and methylene free radical (--CH₂ --).

Additionally, methylene chloride vapor permeates the waste syntheticresin film W along with the surfactant solution S. Hence, decompositionand removal of synthetic resin is improved.

Surfactant solution S mixed with methylene chloride vapor passingthrough organic holes of the waste synthetic resin film W improvesdecomposition of synthetic resin.

Furthermore, before permeation of methylene chloride vapor, water vaporand surfactant permeate, the waste synthetic resin film W is deaeratedin the interior of the treatment tank T, which is made to be a vacuum sothat methylene chloride vapor can permeate the waste synthetic resinfilm W in the state that the air within the waste synthetic resin film Wis extracted therefrom. Accordingly, methylene chloride vapor canpermeate more deeply than ever.

Thus, the methylene chloride vapor easily permeates the waste syntheticresin film and oxidizes it.

Production of a large quantity of methylene chloride vapor at a lowtemperature does not require a high temperature for the disposal of theinterior of the treatment tank T.

While said methylene chloride Me passes through water Wa and surfactantsolution S, C₂ "chlorine gas" generated from methylene chloride isabsorbed into water Wa and controlled not to be generated further forpreventing unfavorable influence thereof on processing.

If a mixture ratio by weight between methylene chloride solution, waterand surfactant is set at 5:4.5:0.5, the highest effect of removingchlorine can be obtained.

In this way, because of a processing of heating the mixture solution ofwater Wa, surfactant S, and methylene chloride Me by the heating/coolingpipes 20, the vapor of methylene chloride Me evaporates into theinterior of the treatment tank T after passing through water Wa andsurfactant solution S, thereby Cl₂ is reduced.

The oxidized and dissolved waste synthetic resin film W remains as it ison the table 26 or is removed therefrom. The dissolved waste syntheticresin film W has been changed into a solid state and its contents is onetenth as large as it was. This solid is thrown in a furnace or a burneras a solid fuel.

The waste synthetic resin film W, which is dissolved and compressed bythe present invention, is taken out separately and dissolved by heat anda component part of oil is taken out easily by a fining separator. Thisis burned up the same as kerosene and can be offered as raw material fora garbage furnace or the production of electric power by incineration orheating by incineration.

By the method of and the equipment for the disposal of waste syntheticresin film of the present invention, a chloric synthetic resin film suchas polyvinyl chlorine is processed, thereupon, chlorine is reduced toone-tenth. Therefore, the generation of chlorine gas is minimized anddoes not cause pollution when the solid or liquid resulting processingis burned up.

Next, other embodiments of methods and equipments for disposal of othermaterials will be explained in accordance with FIGS. 9 to 11.

FIG. 9 shows a state wherein waste W mixed synthetic resin materials mis mounted on the table 26 and processed.

FIG. 10 shows a state wherein a vessel holding a PCB solution is mountedon the table 26 and processed.

FIG. 11 shows a state wherein fish, bones of animals, etc. are mountedon the table 26 and processed.

The embodiments are exactly like the others previously described becausea vapor of methylene chloride solvent solution Me and water Wa fumigatesand processes a substance. Although the substances on the table 26 aredifferent from each other.

In the method and equipment for disposal of waste W mixed syntheticresin materials m shown in FIG. 9, methylene chloride vapor and watervapor permeate the waste W mixed synthetic resin so as to dissolvesynthetic resin into a state that synthetic resin in the waste W iseasily dissolved. Thus, synthetic resin in garbage, such as a trash bag,a polyethylene terephthalate bottle, a mat for wrapping a daily dish,plastic wrap, a plastic vessel, etc. can be separated out with no handin the steps of the present disposal before incineration of garbage.

Adding surfactant to methylene chloride solution promotes an explosivevaporization of methylene chloride solution and a strong oxidization canbe obtained at a low temperature. Also, the surfactant permits pouringof resolved and decomposed synthetic resin from the garbage, so that thetime for the disposal thereof in the treatment tank + can be shortened.

Also, mixing surfactant with water and methylene chloride solutionenables promotion of vaporization of methylene chloride solution andwater at a low temperature. Water usually vaporizes at 100° C., but itcan vaporize at a lower temperature as a result of adding a surfactantthereto. Therefore, sufficient pressure can be obtained at a temperatureranging from 50 to 150° C., and a high temperature over 150° C. is notrequired for obtaining a high pressure.

Chlorine ion (Cl-) and methylene free radical (--CH₂ --) is generatedeasily and the time until extinction by chemical combination is extendedas a result of generating methylene chloride vapor and water vapor undervacuum conditions or at a low pressure in the treatment tank, which hasbeen deaerated before processing by a vacuum pump, whereby, a strongoxidization can be maintained.

A temperature for heating a mixture solution ranging from 50 to 150° C.enables generation of chlorine ion (Cl-) and methylene free radical(--CH₂ --) at a low temperature and prevents damage to the waste W mixedsynthetic resin.

Further, methylene chloride vapor and water vapor permeate a garbage orvegetation so as to dissolve their organic cells, whereby an essence ofvegetation and fat components are easily dissolved outside the treatmenttank. Thus, an essence of vegetation is easily extracted, and in thecase of processing garbage, water and fat is easily separated fromfiber, so that the time of processing for fermentation can be reduced.

Furthermore, since a mixture of water Wa, surfactant solution S andmethylene chloride solution Me is prepared and a gas of methylenechloride Me is fed to waste W, such as garbage or vegetation afterpassing through the layers of both water Wa and surfactant solution S.Cl₂ as a constituent of HCL is absorbed into the water and inflicts nodamage to garbage or vegetation W, because of reduction of the rate ofgeneration thereof. Methylene chloride gas can be easily absorbed andrecovered by reducing pressure in the treatment tank T to be negative ora vacuum after processing. The structure of garbage or vegetation ofwaste W is not damaged after recovery of methylene chloride.

Recovery of methylene chloride gas is performed promptly and completelyand the methylene chloride can be re-used following cooling andliquefaction. In this way, consumption of methylene chloride solution Meand the cost of processing can be reduced.

A temperature range for heating the mixture solution of from 50 to 150°C. enables easy extraction of a natural essence of vegetation without achemical change of the essence, so that this essence is safe and can beused as a health food. Also, the necessary amount of heat can bereduced.

A method of decomposing PCB shown in FIG. 10 according to the presentinvention described above exhibits the following effects.

Conventionally, PCB is hardly decomposed by exposing it to ultravioletrays or processing by heat at a high temperature higher than 1200° C.However, in the present invention, a mixture solution of methylenechloride solution, capable of re-use by recovery, and water is heated ata temperature lower than 100° C., near room temperature, so as togenerate a strong oxidization of chlorine ion (Cl-) by which chains ofPCB can be decomposed, whereby, processing for decomposing PCB can beperformed at a low cost.

A method of removal of oil or fat components from fish or bones ofanimals shown in FIG. 11 according to the present invention describedabove exhibits the following effects.

Removal of oil or fat components from fish or bones of animals isperformed by using methylene chloride solution and water. Methylenechloride is then liquefied by cooling and is separated from the waterand fat. Therefore, the cost of methylene chl o ride can be reduced andit does not pollute the oil or fat and drainage .

Also, methylene chloride solution, which can be recovered easily afterthese processes, can be used again as a solvent solution. Therefore, thecost of processing can be reduced.

Because the processing temperature is low, from 50 to 150° C. fish andbones of animals of waste W is not calcinated. Therefore, the value aspowdered bone or fish meal is not diminished. Also, the cost of energyfor the disposal thereof can be reduced by processing at a lowtemperature and not so high a pressure.

In a short time of about 20 hours, animal bones or fish of waste W areprocessed, whereby, animal bones or fish, which are conventionallyincinerated in spite of removal of oil or fat components, can be easilyprocessed at a low cost. Reduction of waste and effective use of animalbones or fish W as a resource, which has been incineratedconventionally, can be obtained.

Conventionally, pig bone, cow bone and so on are ground into powderwithout completely removing oil or fat components. Therefore, the powderis perishable and generates a stench because of the oil or fat the on.By processing for removal of fat, as in the present invention, powderedbones of high purity can be made and provided as high-grade phosphaticfertilizer.

Also, conventionally, fish is dried for fish meal without removing oilor fat components, so that a smell of fish remains. Thus, there is aproblem that the meat of a cow or a pig, which eats the fish meal, alsosmells of fish. In the present invention, the smell is avoided byremoving oil or fat components from the fish, whereby, the fish meal canbe sold as high-grade fish meal.

Further, animal oil or fat and fish oil are extracted largely fromanimal bones or fish so as to extract effective materials for a humanbody, such as docosahexaenoic acid, hexapentaenoic acid and so on, whichcan be used as a medicine. Accordingly, animal oil or fat and fish oil,which have not previously been of use, can be used effectively.

Furthermore, conventionally, animal bones or fish W is ground intopowder as it is. Then, it is boiled and filtered for extracting animaloil or fat or fish oil. However, by the present invention, oil or fatcomponents can be extracted from animal bones or fish without alteringthe shape thereof. Thus, animal oil or fat or fish oil can be easilyextracted.

Industrial Applicability

In accordance with the present invention, water and methylene chloridesolution, as a halogenated solvent solution or chlorine solvent solutionare mixed and disposed in a treatment tank so as to generate a vapor.Methylene chloride solvent vapor, water vapor, and occasionallysurfactant solvent vapor permeate a waste synthetic resin film W. Then,chlorine ion (Cl-) and methylene free radical (--CH₂ --) generated fromthe vapors in a vacuum interior of the treatment tank operate as strongoxidizers for a longer time than usual, so as to dissolve or decomposesynthetic resin by dividing a long chain molecule of hydrocarbon radicaland changing it into a carbohydrate, alcohol and water. Whereby, harmfulcomponents of PCB, oil or fat components of animal bones or fish, andthe like are dissolved or decomposed.

In the method of and equipment for the disposal of waste synthetic resinfilm according to the present invention, a surfactant solvent solutionis mixed with methylene chloride solution and water, so that saidsurfactant solvent vapor eases the outflow and separation of syntheticresin after it is dissolved. Vapors can be generated at a lowtemperature by mixing the surfactant solvent solution into the methylenechloride solution and water so as to lower the processing temperature,whereby, the waste synthetic resin film W is not calcinated.

Methylene chloride vapor, water vapor, and occasionally surfactantsolvent vapor of the present invention permeate the waste polyvinylchloride W. Then, chlorine ion (Cl-) and methylene free radical (--CH₂--) generated from the vapors in a vacuum interior of the treatment tankoperate as strong oxidizers for a longer period of time than usual, soas to dissolve or decompose synthetic resin by dividing a long chainmolecule of a hydrocarbon radical and changing it into a carbohydrate,alcohol and water.

In the method of and equipment for the disposal of waste polyvinylchloride according to the present invention, surfactant solvent solutionis mixed into methylene chloride solution and water, so that saidsurfactant solvent vapor eases the separation and melting of chlorineafter the waste is dissolved. Vapors can be generated at a lowtemperature by mixing the surfactant solvent solution into the methylenechloride solution and water so as to lower the processing temperature,whereby, the waste polyvinyl chloride W is not calcinated.

The waste polyvinyl chloride W is oxidized and dissolved by chlorine ion(Cl-) and methylene free radical (--CH₂ --) generated from methylenechloride vapor and water. Then, it is removed from the table 26. Thedissolved waste polyvinyl chloride W has been changed into a solid statewhen the table 26 is taken out from the treatment tank. Its contents isone-several tenth as large as its first contents by dissolving andcompressing. The solid can be thrown into a furnace or a burner as solidfuel.

The waste polyvinyl chloride W dissolved and compressed according to thepresent invention is extracted separately and decomposed by heat, afterthat, only the petroleum component is extracted. Thus, used it can be asthe same fuel of kerosene and can be provided as raw material for agarbage furnace or the production of electric power by incineration orheating by incineration.

Also, according to the qualitative analysis findings of all the chemicalelements shown in FIG. 8, chlorine is reduced to one-tenth as much as itis at first when a chloric synthetic resin film, such as polyvinylchlorine, is processed by the present invention. It is conceivable thatchlorine composing a component of waste polyvinyl chlorine is vaporizedand resolved by a chlorine ion (Cl-) and methylene free radical (--CH₂--). It is then acted upon by water so as to change it into hydrochloricacid, etc. and be recovered into the mixture solution.

Therefore, generation of chlorine gas is minimal when a processed solidor liquid is burned up.

Methylene chloride vapor, water vapor, and occasionally surfactant vaporof the present invention permeate garbage mixed with synthetic resin. Achlorine ion (Cl-) and methylene free radical (--CH₂ --) generated fromthe vapors in the vacuum interior of the treatment tank operate asstrong oxidizers for a longer time than usual, so as to dissolve ordecompose synthetic resin by dividing a long chain molecule ofhydrocarbon radical and changing it into a carbohydrate, alcohol andwater, with the remaining garbage.

Only a portion of synthetic resin m of FIG. 9 is oxidized and dissolvedby a chlorine ion (Cl-) and methylene free radical (--CH₂ --) generatedfrom methylene chloride vapor and water vapor of the present invention.The dissolved synthetic resin m does not combine with methylene chloridesolution, water and surfactant solvent solution chemically so that theyare in layers, after that, synthetic resin m can be easily separated andextracted.

Also, a chlorine ion permeates PCB to an extent, because permeation of achlorine ion (Cl-) is strong. By agitation of PCB solution, a largeamount of PCB solution is oxidized and chains of PCB are changed intocloudy matter in alcohol state. Whereby, PCB can be changed intomaterial that will not harm the human body.

I claim:
 1. Method for the disposal of a material comprising mixing ahalogenated solvent solution having a specific gravity not less than 1and a boiling point not more than 100° C., with water, forming a plurallayer mixture solution from mixing the halogenated solvent solution andwater, said plural layer mixture solution comprising an upper waterlayer and a lower halogenated solvent solution layer, placing thematerial above said upper water layer without immersing said material insaid plural layer mixture solution, heating said plural layer mixturesolution to generate a halogenated solvent vapor, passing saidhalogenated solvent vapor through said upper water layer, contactingsaid halogenated solvent vapor with said material after said halogenatedsolvent vapor has passed through said upper water layer to fumigate saidmaterial with said halogenated solvent vapor, and oxidizing saidmaterial by said halogenated solvent vapor.
 2. Method for the disposalof a material comprising mixing a chloride solvent solution, having aspecific gravity not less than 1 and a boiling point not more than 100°C., with water, forming a plural layer mixture solution from mixing thehalogenated solvent solution and water, said plural layer mixturesolution comprising an upper water layer and a lower chloride solventsolution layer, placing the material above said upper water layerwithout immersing said material in said plural layer mixture solution,heating said plural layer mixture solution to generate a chloridesolvent vapor, passing said chloride solvent vapor through said upperwater layer, contacting said chloride solvent vapor with said materialafter said chloride solvent vapor has passed through said upper waterlayer to fumigate said material with said chloride solvent vapor, andoxidizing said material by said chloride solvent vapor.
 3. The method ofclaim 2, wherein the material is at least one material selected from thegroup consisting of PCB, animals and fish.
 4. The method according toclaim 3, further comprising disposing said plural layer mixture solutionand said material in a container and evacuating said container to createa vacuum prior to said step of heating said plural layer mixturesolution, wherein said step of heating occurs at a temperature between50 and 150° C.
 5. Method for the disposal of a material comprisingmixing a methylene chloride solution with water to form a plural layermixture solution, said mixture solution comprising an upper water layerand a lower methylene chloride solution layer, placing the materialabove said upper water layer without immersing said material in saidplural layer mixture solution, heating said plural layer mixturesolution to generate a methylene chloride vapor, passing said methylenechloride vapor through said upper water layer, contacting said methylenechloride vapor with said material after said methylene chloride vaporhas passed through said upper water layer to fumigate said material, andoxidizing said material by said methylene chloride vapor.
 6. The methodof claim 5, wherein the material is at least one material selected fromthe group consisting of a synthetic resin film, a synthetic resin,garbage, vegetation, PCB, animals and fish.
 7. The method of claim 6,wherein said step of heating said plural layer mixture solution occursat 50-150° C.
 8. The method of claim 6, wherein the weight ratio ofmethylene chloride solution to water is set approximately between 1:1and 4:1.
 9. The method of claim 6, wherein said a polyvinyl chloridefilm.
 10. The method of claim 9, wherein chloride is removed from saidpolyvinyl chloride film during said step of oxidizing.
 11. The methodset forth in claim 6, 7, 8, 9 or 10, further comprising disposing saidplural layer mixture solution and said material in a container,evacuating said container to create a vacuum, and commencing thedisposal of said material at a low pressure.
 12. The method set forth inclaim 1, 2 or 5, further comprising disposing said plural layer mixturesolution and said material in a container, evacuating said container tocreate a vacuum, and commencing the disposal of said material at a lowpressure.
 13. The method set forth in claim 1, 2 or 5, wherein said stepof heating said plural layer mixture solution occurs at 50-150° C. 14.The method set forth in claim 1, 2 or 5, wherein water vapor isgenerated from heating said plural layer mixture solution, and furthercomprising contacting said water vapor with said material to fumigateand oxidize said material.
 15. The method set forth in claim 14, furthercomprising mixing a surfactant solution during said step of mixing,wherein said upper water layer further comprises said surfactantsolution and surfactant solution vapor is generated from heating saidplural layer mixture solution, and further comprising contacting saidsurfactant solution vapor with said material to fumigate and oxidizesaid material.
 16. The method set forth in claim 15, wherein a ratio byweight of the halogenated solution to water and surfactant solution isabout 5:4.5:0.5.
 17. Method for the disposal of animal bones or fishcomprising mixing a methylene chloride solution, a surfactant solventsolution and water to form a plural layer mixture solution, placing saidanimal bones or fish proximate to said plural layer mixture solution,said plural layer mixture solution comprising an upper layer of waterand surfactant solvent solution and a lower layer of methylene chloridesolution, heating said plural layer mixture solution to generatemethylene chloride vapor, passing said methylene chloride vapor throughsaid upper layer of water and surfactant solvent solution, generatingwater vapor and surfactant solution vapor, contacting said animal bonesor fish with said water vapor and surfactant solution vapor, and withsaid methylene chloride vapor after said methylene chloride vapor haspassed through said upper layer of water and surfactant solvent solutionto fumigate said animal bones or fish, and oxidizing said animal bonesor fish by said vapors to extract oil or fat components from said animalbones or fish.
 18. The method of claim 17, further comprising disposingsaid mixture solution and said animal bones or fish in a container andremoving the pressure in said container to create a vacuum prior to saidstep of heating said mixture solution wherein said step of heatingoccurs at a temperature between 50 and 150° C.
 19. The method of claim17, wherein the weight ratio of methylene chloride solution to water isset approximately between 1:1 and 4:1.